I have started HRT today, estradot patch 50mg twice weekly and progesterone pills 15 days per month. I never ever have migraines and about one hour after putting the patch on I had visual disturbances, followed by headache and feeling quite drained. I am better now, just a background headache, which is unusual for me. So I decided to read the notice as one does and realised that lower doses were available so I am now tempted to cut my next patch in half to see. Does that seem daft to you?